Costa Rica’s Instituto Meteorológico Nacional (IMN) forecasts a shift in weather patterns for this Sunday, October 4th, 2026. The prediction indicates a decrease in widespread rainfall across the country. Instead of general showers, the IMN anticipates more isolated rainfall events. Alongside the rainfall forecast, the report notes expected maximum temperatures. This update also includes relevant astronomical information, referred to as "efemérides." Residents of Costa Rica should anticipate a potentially drier day compared to recent conditions, though localized showers remain possible. The IMN continues to monitor the situation and will provide further updates as needed.